他的病很严重。
tāde bìng hěn yánzhòng 。
His illness is very serious.
如果不注意,这个问题会变得更严重。
rúguǒ bùzhùyì , zhègè wèntí huì biàndé gēng yánzhòng 。
If we don't pay attention, this problem will become more serious.
他在工作中遇到了严重的困难。
tāzài gōngzuò zhōng yùdào le yánzhòng de kùnnán 。
He encountered serious difficulties at work.